--- rat/lonpageflip.pm 2000/10/11 21:16:29 1.6 +++ rat/lonpageflip.pm 2000/11/14 18:15:01 1.11 @@ -10,7 +10,7 @@ # 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23, # 10/02 Gerd Kortemeyer) # -# 10/03,10/05,10/06,10/07,10/09,10/10,10/11 Gerd Kortemeyer +# 10/03,10/05,10/06,10/07,10/09,10/10,10/11,10/16,10/17,11/14 Gerd Kortemeyer package Apache::lonpageflip; @@ -61,8 +61,44 @@ sub handler { $ENV{'form.postdata'}=~/(\w+)\:(.*)/; my $direction=$1; my $currenturl=$2; + if ($direction eq 'return') { +# -------------------------------------------------------- Return to last known + my $last; + if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db', + &GDBM_READER,0640)) { + $last=$hash{'last_known'}; + untie(%hash); + } + my $newloc; + if ($last) { + $newloc='/res/'.(split(/\_\_\_/,$last))[1]; + } else { + $newloc='/adm/noidea.html'; + } + $r->content_type('text/html'); + $r->header_out(Location => + 'http://'.$ENV{'HTTP_HOST'}.$newloc); + + return REDIRECT; + } $currenturl=~s/^http\:\/\///; $currenturl=~s/^[^\/]+//; + unless ($currenturl=~/\/res\//) { + my $last; + if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db', + &GDBM_READER,0640)) { + $last=$hash{'last_known'}; + untie(%hash); + } + if ($last) { + $currenturl='/res/'.(split(/\_\_\_/,$last))[1]; + } else { + $r->content_type('text/html'); + $r->header_out(Location => + 'http://'.$ENV{'HTTP_HOST'}.'/adm/noidea.html'); + return REDIRECT; + } + } # ------------------------------------------- Do we have any idea where we are? my $position; if ($position=Apache::lonnet::symbread($currenturl)) { @@ -122,7 +158,7 @@ sub handler { # -------------------------------------------------------------------------- Up } elsif ($direction eq 'down') { # ------------------------------------------------------------------------ Down - } + } # ----------------------------------------------------- Check out possibilities if ($next) { @possibilities=split(/\,/,$next); @@ -150,10 +186,22 @@ sub handler { # -------------------------------------------------------------- No place to go $multichoice=-1; } +# ------------------------------------------------------ Set parameters, if any + if ($redirecturl) { + if ($hash{'param_'.$next}) { + my ($mapid,$resid)=split(/\./,$next); + &Apache::lonnet::appendparms( + &Apache::lonnet::declutter($hash{'map_id_'.$mapid}). + '___'.$resid.'___'. + &Apache::lonnet::declutter($redirecturl), + $hash{'param_'.$next}); + } + } # ----------------- The program must come past this point to untie the big hash untie(%hash); # --------------------------------------------------------- Store position info $cachehash{'last_direction'}=$direction; + $cachehash{'last_known'}=&Apache::lonnet::declutter($currenturl); &Apache::lonnet::symblist($mapurl,%cachehash); # ============================================== Do not return before this line if ($redirecturl) { @@ -164,7 +212,43 @@ sub handler { return REDIRECT; } else { # --------------------------------------------------------- There was a problem - } + $r->content_type('text/html'); + $r->send_http_header; + if ($#possibilities>0) { + $r->print(<Choose Next Location + +

LON-CAPA

+There are several possibilities of where to go next. +

+Please click on the the resource you intend to access: +

+ + +ENDSTART + map { + $r->print( + ''); + } @possibilities; + $r->print('
TitleType
'. + $multichoicehash{'title_'.$_}. + ''.$multichoicehash{'type_'.$_}. + '
'); + return OK; + } else { + $r->print(<Choose Next Location + + +

Sorry!

+

Next resource could not be identified.

+ + +ENDNONE + return OK; + } + } } else { # ------------------------------------------------- Problem, could not tie hash $ENV{'user.error.msg'}="/adm/flip:bre:0:1:Course Data Missing";